"Liu Erwa, Liu Erwa!" Chen Xu rode his horse straight to the door of the carpentry workshop, and shouted loudly from afar.

"Lidian, what's the matter with Erwa?" The old carpenter drank dry, dropped the things in his hand, and hurriedly greeted him.

"Quick, help me make a turntable for drawing mud!" Chen Xu jumped off his horse and threw off the reins and rushed into the pergola of the workshop.

"What is a turntable?" The carpenter asked, confused, following his ass.

"Find a ruler and a drawing board!" Chen Xu urged repeatedly.

"Ridian, here!" An apprentice carpenter hurriedly brought over a plank and charcoal bar, as well as a wooden ruler.

But picking up the ruler and charcoal strips, Chen Xu began to be stunned again, Nima seemed to be easy to remember, but it was really a bit difficult to draw, but he had experience in making threshers, he slowly conceived in his mind, and then began to sketch with charcoal strips.

Everyone in the town knew that Chen Xu was very magical, he often had strange and unbelievable ideas, and he had never seen anything he made, so when Chen Xu was painting, the carpenter Liu Erwa and several apprentices were standing behind with bated breath and did not dare to come out, and their eyes were wide open, watching Chen Xu's every move.

Chen Xu used the geometric drawing method of later generations, that is, the perspective method, so what he drew was a two-dimensional three-dimensional view, which he had already talked about in elementary school, so he even knew about some craftsmen in the town.

First draw a circular disc surface, about two feet in diameter, connect a round spindle below, roughly the thickness of the calf, because there is no ball bearing, you need to create a set of copper collar as the same as the stone grinding as a rotating support point, otherwise it will soon be worn out, the position of the half foot distance below the spindle should be carved into a rough gear shape, but not for the installation of gears, but for the installation of transmission belts, the belt can also be temporarily replaced by thick hemp rope, this belt is pulled to a meter away, Then design a big wheel and crank handle like the threshing machine, but it is installed vertically, and the transmission belt is sleeved on the big wheel, and you only need to shake the crank handle, and the big wheel can rotate to drive the spindle of the turntable to rotate with it......

After drawing, wiping and drawing, Chen Xu drew for an hour to roughly shape this simple transmission device, and then marked the numbers next to each other.

The carpenter and several apprentices remained motionless and watched for an hour without making a sound.

"Almost!" Chen Xu finally took a breath and stopped, took a few steps back to look at the design drawings on the drawing board again, thought about adding a bracket for a while, and finally put down the charcoal bar, thinking for a long time and feeling that he could only design like this for the time being, so he turned his head and said to an apprentice, "You go to the blacksmith shop and ask the bamboo pole to help me build three sets of live rings, the large aperture is half a foot, and the small aperture is three inches, remember to tell him to be round when he builds, otherwise it will shake when it turns......"

After the apprentice left, Chen Xu said to the carpenter: "Liu Erwa, now you can build the bracket and turntable according to the drawings I designed, as well as the hand-cranked runner and crank, these should be very simple, here...... Here......"

After Chen Xu's explanation, the carpenter nodded again and again, he who had done a thresher quickly understood Chen Xu's request, of course, it doesn't matter if he heard it wrong, Chen Xu is still next to him, and if he doesn't understand, he can ask again.

Half a day passed in a flash.

In the woodworking workshop, a strange-looking thing was also made.

A circular platform almost one foot high, the main shaft is two inches above the ground and suspended on the support, with the thumb-thick hemp rope as a belt connected to a large wheel with a diameter of 40 centimeters one meter away, the big wheel is not thick, only about five inches, the edge is chiseled out with a chisel a groove half an inch deep, and the thick hemp rope is just set in it and will not fall out.

This is the simplest transmission device, and the principle of the bicycle chain, the big wheel rotates to drive the small wheel, according to the diameter of the conversion, about shake the big wheel to rotate a circle, the small wheel will rotate four to five times, as long as the speed of the shaker is fast enough, if a second turns a circle, the speed of the small wheel per second can reach about five turns, although this speed is not fast enough, but before the invention of high-speed motors or other alternative power, this speed is almost the limit, and the helper of the swing handle is also very tired, It definitely won't last long, unless it's a pervert like Yu Wuya, and it's okay to continue to increase the diameter of the runner, but it's very inconvenient to use that way.

"Give it a spin!" Chen Xu was a little nervous, judging from the finished product in front of him, it must be no problem to rotate, but it depends on the balance of the rotation, and the turntable cannot be swayed from side to side.

An apprentice excitedly held the rocker and began to shake, while the big wheel rotated, sure enough, driven by the hemp rope, the disc was also driven by the spindle to rotate, Chen Xu guessed well, sure enough, the disc was a little all shaking, so that if the blank is pulled, with the platform shaking and jumping, the clay will definitely be crooked, and the thickness of the clay will be uneven.

"Stop, adjust the height of the turntable, and make the hemp rope closer to the position of the live ring, the closer the better!" Chen Xu observed for a while and then began to command adjustments.

More than ten minutes passed, the hand-cranked blank machine began to rotate again, and with the sound of whining, the rotation of the disc was much more stable.

"Alright, almost, lift me to the car and help me pull me to the pottery shop!" Chen Xu finally breathed a sigh of relief, so Liu Erwa and a few apprentices hurriedly pushed the cart to lift the blank drawing machine, and then squeaked towards the pottery workshop, while Chen Xu followed behind on a horse.

"Hey, Master Liu, are you doing something even strange? Where are you going to pull it? ”

Many people on the road were surprised to ask after seeing it, and then learned that this was a blank drawing machine designed by Lord Lidian to make pottery, so a large group of people followed the cart to help push the cart to the pottery workshop to see the strangeness.

When the blank drawing machine was transported to the pottery workshop, there were thirty or forty adults who came with it, and there were even more small babies, and many of them were screaming and shouting excitedly with their bare buttocks.

Chen Xu rode a horse and kept wiping the sweat on his forehead.

When the habit of Chinese people like to watch the excitement can be changed, this face is too scary, these fart babies accidentally stepped on the ditch do not know.

After arriving at the pottery workshop, under the command of Chen Xu, a group of people carefully lifted the blank drawing machine down and put it into a flat place in the pergola, adjusted the four legs of the bracket to look completely flat, and fixed the bracket with stones. ”

"Okay, okay!" The helper is very excited, because I have just heard a group of people gossip that this is the equipment designed by Li Dian himself to make pottery, called the blank machine, although I don't know how to use it, but such a complex thing looks very tall, and I can personally participate in it for the first time, and the helper feels that this is a great honor.

"Gao He, get a ball of clay that has been reconciled, but it's a little thinner than what you usually knead the strips, remember to be able to stand up, don't get into mud!" Chen Xu advised.

"Save it!" Although the old potter doesn't know how Chen Xu uses this blank drawing machine to make pottery, he has dealt with mud all his life, touching the mud all day and night all year round, and he can be said to be more familiar with the mud than his own mother-in-law.

Soon a basin of mud was brought to Chen Xu's side, Chen Xu dug out the rice bowl with his hands and felt it, it was indeed soft and hard, just like the dough, put the mud dough on the round turntable of the blank machine and press it firmly, Chen Xu wet his hand in the basin and said to the helper: "Start turning!" ”

The helper then excitedly and nervously began to shake the handlebar, and as the handle turned, the round turntable also began to rotate.

"Wow, look, it's spinning!"

Except for the carpenter and a few of his apprentices, countless people followed in exclamation.

"Faster~" Chen Xu said loudly.

So the helper turned up at a faster speed, and the hand that turned directly from the crank became an afterimage.

"Woo woo woo~" The turntable rotated rapidly under the drive of the big wheel, to see that the speed was fast enough, Chen Xu took a deep breath, and gently put his hands on the mud ball in the center of the turntable, almost at the moment when his hand approached, I saw that the clay quickly turned into a cylinder and grew up, and then with Chen Xu's two thumbs pressed down from the middle of the clay, with the rapid rotation of the turntable, the shape of a clay bowl appeared instantly.

"Wow~"

The onlookers were in an uproar, and they all exclaimed excitedly, a ball of mud turned into the shape of a pottery bowl in the blink of an eye in Chen Xu's hands, and with Chen Xu's fingers pinching it slightly, the edge of the pottery bowl quickly became round and thin, looking at the shape almost successfully, Chen Xu gently touched his hand at the bottom of the pottery bowl, and with the rapid rotation of the turntable, the bottom of the bowl was soon retracted in.

"Stop~" Chen Xu took his hand away.

As the helper of the rocker let go of his hand, the big wheel continued to rotate a few times, and the turntable slowly stopped, and then fell in the eyes of everyone, a round and smooth pottery bowl stood quietly on the turntable.

"This ...... This ......" The old potter's excited beard shook desperately, his mouth trembled and he couldn't speak, but his eyes were a little red, and he couldn't wait to pounce on the blank drawing machine.

Chen Xu also breathed a sigh of relief, he had played with mud when he was a child, but he had never played so tall.

This pottery bowl is made by feeling, because the clay is delicate enough and soft and hard, it actually allows him to form it at one time, although there are only two simple actions, but it is enough to make Chen Xu proud.

After three months of traveling to Daqin, he finally made a second machine.